jerrypeng commented on code in PR #36737: URL: https://github.com/apache/spark/pull/36737#discussion_r891532480
########## sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala: ########## @@ -3963,8 +3966,10 @@ object TimeWindowing extends Rule[LogicalPlan] { def getWindow(i: Int, dataType: DataType): Expression = { val timestamp = PreciseTimestampConversion(window.timeColumn, dataType, LongType) - val lastStart = timestamp - (timestamp - window.startTime - + window.slideDuration) % window.slideDuration + val remainder = (timestamp - window.startTime) % window.slideDuration + val lastStart = CaseWhen( + Seq((LessThan(remainder, 0), timestamp - remainder - window.slideDuration)) Review Comment: Can you explain why this is correct now? Please give an example. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org